Lithium titanate epitaxial coating on spinel lithium manganese oxide surface for improving the performance of lithium storage capability

Jili Li; Youqi Zhu; Lin Wang; Chuanbao Cao

doi:10.1021/am504319y

Lithium titanate epitaxial coating on spinel lithium manganese oxide surface for improving the performance of lithium storage capability

Jili Li, Youqi Zhu, Lin Wang, Chuanbao Cao^*

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

62 Citations (Scopus)

Abstract

Spinel lithium titanate (Li₄Ti₅O₁₂, LTO) is applied as an epitaxial coating layer on LiMn₂O₄ hollow microspheres (LMO) through solvothermal-assisted processing. The epitaxial interface between LTO and LMO can be clearly observed by high resolution transmission electron microscopy (HR-TEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) with atomic resolution images. The epitaxial coating cathode (EC-LMO@LTO) exhibits an excellent cyclability, thermal and rate capability for LIBs cathode due to the complete, thin LTO coating layer with strong adhesion to the host material. In addition, the small structure mismatch and high Li⁺-ion mobility of LTO can be beneficial to forming an efficient tunnel for Li⁺-ion transfer at the interface. It is suggested that EC-LMO@LTO can be recognized as a promising cathode material in electric vehicles (EVs) and plug-in hybrid electric vehicles (HEVs).

Original language	English
Pages (from-to)	18742-18750
Number of pages	9
Journal	ACS applied materials & interfaces
Volume	6
Issue number	21
DOIs	https://doi.org/10.1021/am504319y
Publication status	Published - 12 Nov 2014

Keywords

Li-ion batteries
heteroepitaxial structure
lithium titanate coating
solvothermal
spinel lithium manganese oxide

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10.1021/am504319y

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@article{a37984d4f6f9407594ff84d5a159f990,

title = "Lithium titanate epitaxial coating on spinel lithium manganese oxide surface for improving the performance of lithium storage capability",

abstract = "Spinel lithium titanate (Li4Ti5O12, LTO) is applied as an epitaxial coating layer on LiMn2O4 hollow microspheres (LMO) through solvothermal-assisted processing. The epitaxial interface between LTO and LMO can be clearly observed by high resolution transmission electron microscopy (HR-TEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) with atomic resolution images. The epitaxial coating cathode (EC-LMO@LTO) exhibits an excellent cyclability, thermal and rate capability for LIBs cathode due to the complete, thin LTO coating layer with strong adhesion to the host material. In addition, the small structure mismatch and high Li+-ion mobility of LTO can be beneficial to forming an efficient tunnel for Li+-ion transfer at the interface. It is suggested that EC-LMO@LTO can be recognized as a promising cathode material in electric vehicles (EVs) and plug-in hybrid electric vehicles (HEVs).",

keywords = "Li-ion batteries, heteroepitaxial structure, lithium titanate coating, solvothermal, spinel lithium manganese oxide",

author = "Jili Li and Youqi Zhu and Lin Wang and Chuanbao Cao",

note = "Publisher Copyright: {\textcopyright} 2014 American Chemical Society.",

year = "2014",

month = nov,

day = "12",

doi = "10.1021/am504319y",

language = "English",

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journal = "ACS applied materials & interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Lithium titanate epitaxial coating on spinel lithium manganese oxide surface for improving the performance of lithium storage capability

AU - Li, Jili

AU - Zhu, Youqi

AU - Wang, Lin

AU - Cao, Chuanbao

PY - 2014/11/12

Y1 - 2014/11/12

N2 - Spinel lithium titanate (Li4Ti5O12, LTO) is applied as an epitaxial coating layer on LiMn2O4 hollow microspheres (LMO) through solvothermal-assisted processing. The epitaxial interface between LTO and LMO can be clearly observed by high resolution transmission electron microscopy (HR-TEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) with atomic resolution images. The epitaxial coating cathode (EC-LMO@LTO) exhibits an excellent cyclability, thermal and rate capability for LIBs cathode due to the complete, thin LTO coating layer with strong adhesion to the host material. In addition, the small structure mismatch and high Li+-ion mobility of LTO can be beneficial to forming an efficient tunnel for Li+-ion transfer at the interface. It is suggested that EC-LMO@LTO can be recognized as a promising cathode material in electric vehicles (EVs) and plug-in hybrid electric vehicles (HEVs).

AB - Spinel lithium titanate (Li4Ti5O12, LTO) is applied as an epitaxial coating layer on LiMn2O4 hollow microspheres (LMO) through solvothermal-assisted processing. The epitaxial interface between LTO and LMO can be clearly observed by high resolution transmission electron microscopy (HR-TEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) with atomic resolution images. The epitaxial coating cathode (EC-LMO@LTO) exhibits an excellent cyclability, thermal and rate capability for LIBs cathode due to the complete, thin LTO coating layer with strong adhesion to the host material. In addition, the small structure mismatch and high Li+-ion mobility of LTO can be beneficial to forming an efficient tunnel for Li+-ion transfer at the interface. It is suggested that EC-LMO@LTO can be recognized as a promising cathode material in electric vehicles (EVs) and plug-in hybrid electric vehicles (HEVs).

KW - Li-ion batteries

KW - heteroepitaxial structure

KW - lithium titanate coating

KW - solvothermal

KW - spinel lithium manganese oxide

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U2 - 10.1021/am504319y

DO - 10.1021/am504319y

M3 - Article

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SN - 1944-8244

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EP - 18750

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

IS - 21

ER -

Lithium titanate epitaxial coating on spinel lithium manganese oxide surface for improving the performance of lithium storage capability

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Keywords

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